Hello,
The current sense lines are sensitive to noise (which increases at higher input voltages).
Try improving the filter circuit by increasing R39, R42, R48, and R52 to 100 Ohms each.
Also, we recommend that the CRamp (C43, C65) be less than 2nF…
Part Number: LM5140-Q1 Other Parts Discussed in Thread: LM5140ADESIGN-CALC , LM25119-5119QUICK-CALC Dear, Sir.
My custonmer is interested in LM5140-Q1 to realize the interleaved current share to increase
the oiutput current.
Accoring other thread…
Hi Team,
We would like to use LM25119-Q1 at 4 phase circuit because the output power is very large(around 700W).
Therefore, we needs the design tool for 4 phase circuit.
Could you please let us know if you have it?
We found the following tool…
Hello Erik,
First can you tell me what version of the quick start you are using? It should be version 1.5 which can be downloaded here if you do not have the most recent version. http://www.ti.com/tool/lm25119-5119quick-calc
Also will you indicate…
Hi Gareth
I am using the LM25119 Quick Start calculator in this link with the parameters you mentioned in the schematic and i got the 183pF - 550pF range.
Attached is the calculator file with the circuit parameters LM(2)5119 QuickStart ICC Modified_Gareth…
Hoa,
A 2-phase solution with 20A per phase is feasible. Please consider the LM25119 or LM5140-Q1 current-mode controllers.
The LM25145 voltage-mode controller is also a possibility, you can review this content: e2e.ti.com/.../how-to-design-a-simple…
